Multi-function board eraser structure

ABSTRACT

A multi-function board eraser structure includes a dust-collecting device, a flexible pipe, a wiping absorber opening and a mobile guiding track. The dust-collecting device is small in volume, has intense absorbing forces and is capable of moving about as well as being devised with a light-indicative power switch, an overload protective fuse base, an overheating protective indication lamp, and a dust-collecting chamber saturated pressure switch display. Above the dust-collecting chamber are a dust-collecting breach and a scraping plate for absorbing dust accumulated at the wiping absorber opening for restoring the wiping absorber opening to an optimal status for further usage. The wiping absorber opening has a wiping plane, which is an arched body for gathering chalk dust at a middle section of the main body during a wiping process and is made of a highly elastic material for facilitating dust collection. The wiping plane is covered by a velvet plane that is highly electrostatic and wear-resistant. Thus, the velvet plane not only favors collection of dust being wiped off but offers replacement conveniences.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The invention relates to a board eraser structure, and more particularly, to a board eraser structure having a small volume, intense absorbing forces, significant dust-collecting effects, excellent safety and convenient mobility.

(b) Description of the Prior Art

In daily life, it is rather difficult to clean tiny dust or dirt having minute volumes, light masses and strong adhesive forces merely using common sweeping means. Thus, dirt and dust are generally cleaned by wiping or rubbing methods. During a process of wiping, dust and dirt originally attached to surfaces of an object can indeed be eliminated; however, the dust and dirt that come off the surface of the object frequently become floating in the air and are much likely be hazardous when inhaled into human lungs.

Therefore, supposed dust and dirt that come off from surfaces of an object are immediately absorbed using a dust-collecting device when wiping away dust and dirt, and prevented from diffusing into the air, not only hazards of inhaling dust and dirt are lowered but also a task of cleaning dust and dirt is provided with better efficiency. Yet, prior board eraser structures are hardly considered as practical for that they are large in volume, have little absorbing forces and are incapable of moving about. In addition, most prior board eraser structures lack related safety designs, such that they are prone to damages due to current overload or machinery overheating. Also, dust located in crevices and grooves cannot be effectively eliminated using the prior board eraser structures, and are instead likely inhaled into human lungs to add another shortcoming to the prior board eraser structures.

The aforesaid shortcomings of the prior board eraser structures are long since disturbances for industrialist and consumers. Therefore, it is a vital task of the invention to provide a multi-function board eraser structure, which overcomes the shortcomings of the prior inventions to prevent health hazards resulted by dust and dirt as well as to elevate practical values.

SUMMARY OF THE INVENTION

A multi-function board eraser structure comprises a dust-collecting device, a flexible pipe, a wiping absorber opening and a mobile guiding track. The dust-collecting device has a motor for driving and rotating leaves to further form negative pressure in a dust-collecting chamber thereof, thereby providing forces for absorbing dust and dirt. The invention is small in volume, has intense absorbing forces and is capable of moving about. In addition, the multi-function board eraser structure according to the invention is also devised with a light-indicative power switch, an overload protective fuse base, an overheating protective indication lamp, a dust-collecting chamber saturated pressure switch display, and a mobile guiding track.

Furthermore, the wiping absorber opening is provided with an ergonomic box-like main body having a wiping plane, which is an arched body for gathering chalk dust at a middle section of the main body during a wiping process and is made of a highly elastic material for facilitating dust collection. The wiping plane is covered by a velvet plane that is highly electrostatic and wear-resistant. Thus, the velvet plane not only favors collection of dust being wiped off but offers replacement conveniences. More particularly, dust and dirt accumulated at a surface of the velvet plane are absorbed using a dust-collecting breach and a scraping plate disposed above the dust-collecting chamber, thereby restoring the wiping absorber opening to an optimal status for further usage.

The invention is additionally provided with a mobile guiding track. The board eraser structure is installed to the guiding track and, in conjunction with movements during erasing processes, is provided with movements as desired to overcome a shortcoming as prior board eraser structures being immobile.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a perspective elevational view according to the invention.

FIG. 2 shows an internal structural view of the dust-collecting device according to the invention.

FIG. 3 shows an exploded structural view of a wiping absorber opening according to the invention.

FIG. 4 shows a structural view illustrating a seat of the dust-collecting device according to the invention.

FIG. 5 shows a view according to the invention in use.

FIG. 6 shows a structural view of a guiding box according to the invention.

FIG. 7 shows a structural view of a scraping plate according to the invention.

FIG. 8 shows a perspective structural view of the absorber opening in another form according to the invention.

FIG. 9 shows a view according to the invention in use when placed on a guiding track.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

To better understand structures, characteristics and operation methods of the invention, detailed descriptions shall be given below.

Referring to FIGS. 1 and 2 respectively showing a perspective elevational view and an internal structural view of the dust-collecting device according to the invention, a multi-function board eraser structure according to the invention comprises:

a dust-collecting device 10 having a seat 11 and a housing 12, wherein the seat 11 has a groove 111 for providing airtight effects with the housing 12; a dust-collecting chamber 13, a motor 16 and leaves 16 (not shown), wherein negative pressure in the dust-collecting chamber 13 is formed by rotations of the leaves driven by the motor to further provide forces for absorbing dust and dirt; and a cover 14, and a fastening section 15 to form a fastening mechanism between the cover 14 and the device in this embodiment according to the invention, so as to facilitate a user to readily clean dust and dirt accumulated in the dust-collecting chamber 13;

a wiping absorber opening 2 as in FIG. 3 showing an exploded structural view of the wiping absorber opening according to the invention, having a container body 21; an arched wiping plane 22 made of a highly elastic material to gather chalk dust in a middle section of the body, and distributed with holes 221 that are in communication with the container body 21; a pad 23 between the wiping plane 22 and the container body 21 and for providing airtight effects; and a velvet plane 24 covering a surface of the wiping plane 22 and being high electrostatic and wear-resistant, so as to reinforce wiping effects of the dust-collecting device for collecting dust and dirt.

Referring to FIG. 1, the dust-collecting device 10 and the wiping absorber opening 20 are accommodated and joined with a flexible pipe 30 for providing the wiping absorber opening with absorbing forces. Referring to FIGS. 2 and 4, the seat 11 according to the invention has an insertion slot 18 at an entrance and an exit of the dust-collecting chamber 13, respectively. The insertion slot 18 at the entrance is provided with a dust-collecting bag 41, and the insertion slot 18 at the exit is provided with a dust-collecting bag filter 42. The filter 42 is devised with a filter cotton at a front section thereof for gathering dust and dirt into the dust-collecting chamber 13 in the dust-collecting bag 42. The dust and dirt are prevented from entering the motor 16 by reinforcement of the filter 42. The motor 16 has a motor front cover at a front section thereof, a motor shock absorber at a rear section thereof, and a sound proof pad at one side thereof for minimizing sound of rotation of the motor 16.

In addition, the dust-collecting device 10 can be provided with safety protective members such as a light-indicative power switch, an overload protective fuse base, an overheating protective indication lamp, a dust-collecting chamber saturated negative pressure display. Wherein, the lamp-indicative power switch 171 is a light-emitting device at a power switch, the overload protective fuse base 172 is a fuse, the overheating protective indication lamp 173 is an overheating switch and an indication lamp, and the dust-collecting chamber saturated negative pressure display 174 is a negative pressure switch of the dust-collecting chamber 13. Using the aforesaid safety protective members, normal operations of the dust-collecting device are ensured, and potential damages caused by inappropriate operations are also prevented.

According to the aforesaid descriptions, apart from being small in volume and having intense absorbing forces and good mobility, the dust-collecting device according to the invention also offers optimal safety precautions. In practical use, referring to FIG. 1, the wiping absorber opening 20 is not only easy for a user to hold, but also has excellences as being highly wear-resistant, and having enhanced wiping effects and optimal dust-collection effects. The velvet plane 24 of the dust-collecting device enables a user to carry out DIY (Do-It-Yourself) replacement using similar materials to further significantly reduce consuming peripheral costs.

Referring to FIG. 1, the cover 14 above the dust-collecting device 13 according to the invention is provided with a dust-absorbing breach 191, and accommodated with a zigzag scraping plate 192 j that is an assembled part and can be replaced when damaged. Referring to FIG. 5 showing a view according to the invention in use, using the scraping plate 192, dust and dirt at surfaces of the velvet plane 24 are scraped off to keep the velvet plane clean, and the dust and dirt scraped off are instantaneously absorbed into the dust-collecting chamber via the dust-absorbing breach 192, thereby quickly restoring the wiping absorber opening 20 back to an optimal status for further usage. Furthermore, the entire dust-collecting device is provided with a flat absorber opening 40 as shown in FIG. 8. The flat absorber opening 40 is for effectively absorbing dust and dirt in gaps or indents, and thus elevating practicability and conveniences of the entire dust-collecting device.

Referring to FIGS. 6 and 7 respectively showing structural view of a guiding box and the scraping plate according to the invention, the guiding box is provided with the scraping plate 192 and the dust-absorbing breach 191. Dust and dirt are scraped off by the scraping plate 192 and are then absorbed into the dust-collecting bag 41 via the dust-absorbing breach 191. The scraping plate 192 is devised with certain angle and dimensions to further facilitate scraping off power-like objects.

Referring to FIG. 9 showing a view according to the invention in use when placed on a guiding track, the dust-collecting device 10 according to the invention is placed on the guiding track, and therefore applications thereof are not limited due to an excessive area of the blackboard by being able to move the dust-collecting device 10 as desired.

Conclusive from the above, the multi-function board eraser structure according to the invention indeed overcomes shortcomings of prior invention by being small in volume, and having intense absorbing forces and optical safety. It is of course to be understood that the embodiment described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims. 

1. A multi-function board eraser structure having a dust-collecting structure comprising: a dust-collecting device having a dust-collecting chamber, a motor, leaves at an interior thereof; wherein the leaves are driven by the motor to form negative pressure in the dust-collecting chamber, thereby producing forces for absorbing dust and dirt; a guiding box in an L-shape, and having a scraping plate and a dust-absorbing breach; wherein the scraping plate is detachable, and the dust-absorbing breach is in a zigzag form; a wiping absorber opening having a box-like main body, and an arched wiping plane made of a highly elastic material; wherein, the wiping plane is distributed with holes in communication with the box-like main body, and has a surface thereof covered by a velvet plane; a flexible pipe connected between the box-like main body of the wiping absorber opening and the dust-collecting chamber, and for producing the wiping absorber opening with absorbing forces; and a mobile guiding track disposed below a blackboard, and installed with the dust-collecting device; wherein, the dust-collecting device is moved as desired along the guiding track, thereby forming a multi-function board eraser structure that is small in volume, having intense absorbing forces and optimal safety, being mobile, and being highly electrostatic and wear-resistant.
 2. The multi-function board eraser structure in accordance with claim 1, wherein an interior of the dust-collecting chamber is provided with a dust-collecting bag that is joined with the flexible pipe.
 3. The multi-function board eraser structure in accordance with claim 1, wherein the dust-collecting device is devised with members including a light-indicative power switch, an overload protective fuse base, an overheating protection indication lamp, and a saturated negative pressure switch display.
 4. The multi-function board eraser structure in accordance with claim 3, wherein the light-indicative power switch is a light-emitting device disposed at a power switch.
 5. The multi-function board eraser structure in accordance with claim 3, wherein the overload protective fuse base is a base.
 6. The multi-function board eraser structure in accordance with claim 3, wherein the overheating protective indication lamp is an overheating switch and an indication lamp.
 7. The multi-function board eraser structure in accordance with claim 3, wherein the dust-collecting chamber saturated negative pressure switch display is a negative pressure switch provided at the dust-collecting chamber.
 8. The multi-function board eraser structure in accordance with claim 1, wherein between the wiping plane of the wiping absorber opening and the box-like main body is a pad.
 9. The multi-function board eraser structure in accordance with claim 1, wherein between the dust-collecting chamber and the motor are a filter cotton and a filter.
 10. The multi-function board eraser structure in accordance with claim 1, wherein the dust-collecting chamber is provided with a dust-absorbing breach above.
 11. The multi-function board eraser structure in accordance with claim 10, wherein the dust-absorbing breach has a scraping plate at an edge thereof.
 12. The multi-function board eraser structure in accordance with claim 10, wherein the dust-absorbing breach has a zigzag scraping plate at an edge thereof.
 13. The multi-function board eraser structure in accordance with claim 1, wherein a body of the device is formed by a seat and a housing, the seat has a groove, the housing has a cover located above the dust-collecting chamber and a fastening section to form fastening mechanism between the cover and the device.
 14. The multi-function board eraser structure in accordance with claim 1, wherein a body of the device is formed by a seat and a housing, the seat respectively has an insertion slot at an entrance and an exit of the dust-collecting chamber, a dust-collecting bag at the slot at the entrance, and a dust-collecting bag filter at the slot at the exit.
 15. The multi-function board eraser structure in accordance with claim 1, wherein the mobile guiding track is a track accomplished using rolling wheel, sliding wheel, belt, magnetism, dovetailing, roller axis, V-shaped recess, roller means. 